Title :
Motion estimation using the multiresolution analysis of L/sup 2/(R/sup 3/)
Author :
Allen, Ronald L.
Author_Institution :
Dept. of Comput. Sci. Eng., Texas Univ., Arlington, TX, USA
Abstract :
A multiresolution analysis (MRA) of L/sup 2/(R/sup 3/), which supports an orthogonal wavelet decomposition and a quadrature mirror filter pyramid algorithm, is the framework for estimating image motion. Instead of the usual iterative pyramid algorithm, a fast, direct derivation of coarse resolution space-time images within the MRA is developed. Two spatio-temporal filtering methods are described. The orientation of surfaces in R/sup 3/ gives robust indication of image motion. However, the alternative method with oriented texture energies in the spatio-temporal image fares poorly when velocities vary.<>
Keywords :
filtering and prediction theory; image segmentation; image texture; motion estimation; wavelet transforms; coarse resolution space-time images; motion estimation; multiresolution analysis; oriented texture energies; orthogonal wavelet decomposition; pyramid algorithm; quadrature mirror filter; spatio-temporal filtering methods; spatio-temporal image; surface orientation; velocities; Filtering; Filters; Image resolution; Iterative algorithms; Mirrors; Motion analysis; Motion estimation; Multiresolution analysis; Robustness; Wavelet analysis;
Conference_Titel :
Image Analysis and Interpretation, 1994., Proceedings of the IEEE Southwest Symposium on
Conference_Location :
Dallas, TX, USA
Print_ISBN :
0-8186-6250-6
DOI :
10.1109/IAI.1994.336671
